ATE488776T1 - MAGNETIC SENSOR DEVICE WITH FIELD GENERATORS AND SENSOR ELEMENTS - Google Patents

MAGNETIC SENSOR DEVICE WITH FIELD GENERATORS AND SENSOR ELEMENTS

Info

Publication number
ATE488776T1
ATE488776T1 AT07789712T AT07789712T ATE488776T1 AT E488776 T1 ATE488776 T1 AT E488776T1 AT 07789712 T AT07789712 T AT 07789712T AT 07789712 T AT07789712 T AT 07789712T AT E488776 T1 ATE488776 T1 AT E488776T1
Authority
AT
Austria
Prior art keywords
magnetic sensor
sensor device
magnetic
field generators
excitation
Prior art date
Application number
AT07789712T
Other languages
German (de)
Inventor
Jeroen Hans Nieuwenhuis
Hans Zon
Johannes Arnoldus Henricus Maria Kahlman
Original Assignee
Koninkl Philips Electronics Nv
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Application granted granted Critical
Publication of ATE488776T1 publication Critical patent/ATE488776T1/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
    • G01R33/09—Magnetoresistive devices
    • G01R33/093—Magnetoresistive devices using multilayer structures, e.g. giant magnetoresistance sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
    • G01R33/1269—Measuring magnetic properties of articles or specimens of solids or fluids of molecules labeled with magnetic beads

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Nanotechnology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Measuring Magnetic Variables (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

The invention relates to a magnetic sensor device (10) comprising (a) excitation wires (11, 13) for generating a magnetic excitation field (B) that magnetizes particles (2) in an investigation region (5), and (b) a magnetic sensor element, for example a GMR sensor (12), for detecting reaction fields (B′) generated by the magnetized particles (2). The excitation wires (11, 13) and the GMR element (12) are driven by current pulses such that the average power dissipation is kept constant while the signal-to-noise ratio is optimized. The sampling frequency of said pulses is preferably larger than the thermal time constant (τ) of the magnetic sensor device (10).
AT07789712T 2006-06-28 2007-06-18 MAGNETIC SENSOR DEVICE WITH FIELD GENERATORS AND SENSOR ELEMENTS ATE488776T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06116180 2006-06-28
PCT/IB2007/052327 WO2008001263A2 (en) 2006-06-28 2007-06-18 Magnetic sensor device with field generators and sensor elements

Publications (1)

Publication Number Publication Date
ATE488776T1 true ATE488776T1 (en) 2010-12-15

Family

ID=38846052

Family Applications (1)

Application Number Title Priority Date Filing Date
AT07789712T ATE488776T1 (en) 2006-06-28 2007-06-18 MAGNETIC SENSOR DEVICE WITH FIELD GENERATORS AND SENSOR ELEMENTS

Country Status (7)

Country Link
US (1) US20100148765A1 (en)
EP (1) EP2038670B1 (en)
JP (1) JP2009543039A (en)
CN (1) CN101479617A (en)
AT (1) ATE488776T1 (en)
DE (1) DE602007010630D1 (en)
WO (1) WO2008001263A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010504515A (en) * 2006-09-20 2010-02-12 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Sensor device and method for detecting particles
EP2541230A1 (en) 2011-06-30 2013-01-02 Koninklijke Philips Electronics N.V. Detection of clusters of magnetic particles
PT2800970T (en) 2012-01-04 2016-12-27 Magnomics S A Monolithic device combining cmos with magnetoresistive sensors
US10193372B2 (en) * 2014-09-02 2019-01-29 Apple Inc. Operating an inductive energy transfer system
CN107796865B (en) 2016-09-05 2021-05-25 财团法人工业技术研究院 Biomolecular magnetic sensor
US11519858B2 (en) 2021-01-11 2022-12-06 Ysi, Inc. Induced crosstalk circuit for improved sensor linearity

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11259825A (en) * 1998-03-06 1999-09-24 Tdk Corp Magneto resistive effect head
JP3838469B2 (en) * 1998-04-20 2006-10-25 Ｔｄｋ株式会社 Magnetic characteristic control method of magnetoresistive element, magnetic characteristic control method of magnetic head including the element, magnetic head device including the element, and magnetic disk device
KR20040068968A (en) * 2001-12-21 2004-08-02 코닌클리케 필립스 일렉트로닉스 엔.브이. Sensor and method for measuring the areal density of magnetic nanoparticles on a micro-array
EP1462173A1 (en) * 2003-03-28 2004-09-29 Interuniversitair Micro-Elektronica Centrum (IMEC) Method for the controlled transport of magnetic beads and devices for the method
CN1829922B (en) 2003-07-30 2010-06-16 皇家飞利浦电子股份有限公司 On-chip magnetic particle sensor with improved SNR
US20080309329A1 (en) * 2003-07-30 2008-12-18 Koninklike Philips Electronics N.V. On-Chip Magnetic Sensor Device with Suppressed Cross-Talk
JP2009530602A (en) * 2006-03-15 2009-08-27 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Sensor device using AC excitation magnetic field
CN101467059A (en) * 2006-05-09 2009-06-24 皇家飞利浦电子股份有限公司 Magnetic sensor device with field generators and sensors
JP2009539098A (en) * 2006-05-30 2009-11-12 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Adaptive magnetic field compensation sensor device
EP2052245A2 (en) * 2006-08-09 2009-04-29 Koninklijke Philips Electronics N.V. Magnetic sensor device on a microchip
WO2008075274A2 (en) * 2006-12-18 2008-06-26 Koninklijke Philips Electronics N. V. Magnetic sensor device with robust signal processing

Also Published As

Publication number Publication date
WO2008001263A3 (en) 2008-08-21
EP2038670B1 (en) 2010-11-17
DE602007010630D1 (en) 2010-12-30
JP2009543039A (en) 2009-12-03
US20100148765A1 (en) 2010-06-17
EP2038670A2 (en) 2009-03-25
CN101479617A (en) 2009-07-08
WO2008001263A2 (en) 2008-01-03

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Legal Events

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